Electronic device and driving method thereof

Abstract

An electronic device includes a display layer configured to define a first non-folding area, a second non-folding area, and a folding area between the first non-folding area and the second non-folding area, and display an image, a sensor layer disposed on the display layer to detect an external input, a first digitizer disposed under the display layer and overlapping the first non-folding area, a second digitizer disposed under the display layer and overlapping the second non-folding area, and a main driver configured to calculate coordinates of a pen based on a first signal obtained from the sensor layer, a second signal obtained from the first digitizer, and a third signal obtained from the second digitizer.

What is claimed is: 
     
       1. An electronic device comprising:
 a display layer configured to define a first non-folding area, a second non-folding area, and a folding area between the first non-folding area and the second non-folding area, and display an image; 
 a sensor layer disposed on the display layer to detect an external input; 
 a first digitizer disposed under the display layer and overlapping the first non-folding area; 
 a second digitizer disposed under the display layer and overlapping the second non-folding area; and 
 a main driver configured to calculate coordinates of a pen based on a first signal obtained from the sensor layer, a second signal obtained from the first digitizer, and a third signal obtained from the second digitizer, 
 wherein the first signal is obtained in a compensation area of the sensor layer that overlaps a gap between the first digitizer and the second digitizer. 
 
     
     
       2. The electronic device of  claim 1 , wherein a first detection area overlapping the folding area, a second detection area overlapping the first non-folding area, and a third detection area overlapping the second non-folding area are defined in the sensor layer,
 wherein the first signal is a signal obtained from the first detection area. 
 
     
     
       3. The electronic device of  claim 2 , wherein the sensor layer comprises a first detection unit disposed in the first detection area, a second detection unit disposed in the second detection area, and a third detection unit disposed in the third detection area, and
 wherein areas of the first to third detection units are the same. 
 
     
     
       4. The electronic device of  claim 2 , wherein the sensor layer comprises:
 a first detection unit disposed in the first detection area, a second detection unit disposed in the second detection area, and a third detection unit disposed in the third detection area, and 
 wherein an area of the first detection unit is smaller than each of an area of the second detection unit and an area of the third detection unit. 
 
     
     
       5. The electronic device of  claim 4 , wherein the folding area of the display layer is folded based on a folding axis extending in a first direction,
 wherein a width of the first detection unit in a direction parallel to the first direction is the same as a width of each of the second detection unit and the third detection unit in a direction parallel to the first direction, 
 wherein a width of the first detection unit in a direction parallel to a second direction crossing the first direction is smaller than a width of each of the second detection unit and the third detection unit in a direction parallel to the second direction. 
 
     
     
       6. The electronic device of  claim 1 , further comprising:
 a sensor driver electrically connected to the sensor layer; and 
 a digitizer driver electrically connected to the first digitizer and the second digitizer, 
 wherein the main driver calculates the coordinates of the pen based on data provided from the sensor driver and data provided from the digitizer driver. 
 
     
     
       7. The electronic device of  claim 1 , wherein the first signal is a signal detected by an input by an object of less than a reference diameter. 
     
     
       8. The electronic device of  claim 1 , wherein the first digitizer and the second digitizer are spaced apart from each other, and
 wherein a gap between the first digitizer and the second digitizer overlaps the folding area of the display layer. 
 
     
     
       9. The electronic device of  claim 1 , wherein a first detection area configured to detect an input of a pen is defined in the first digitizer,
 wherein a second detection area configured to detect the input of the pen is defined in the second digitizer, 
 wherein the compensation area configured to sense the input of the pen is defined in the sensor layer, and 
 wherein at least a portion of the compensation area non-overlaps each of the first detection area and the second detection area. 
 
     
     
       10. The electronic device of  claim 1 , wherein the sensor layer comprises:
 a first detection unit disposed in the compensation area, and a second detection unit disposed in a peripheral area of the compensation area, and 
 wherein an area of the first detection unit is smaller than an area of the second detection unit. 
 
     
     
       11. The electronic device of  claim 1 , wherein the sensor layer comprises:
 an electrode and a cross electrode crossing the electrode, 
 wherein the sensor layer obtains information on an external input through a change in capacitance between the electrode and the cross electrode, and 
 wherein each of the first digitizer and the second digitizer includes a plurality of coils, and obtains the information on the external input through a signal induced to the plurality of coils. 
 
     
     
       12. An electronic device comprising:
 a display layer configured to define a first non-folding area, a second non-folding area, and a folding area between the first non-folding area and the second non-folding area, and display an image; 
 a sensor layer disposed on the display layer to detect an external input and including a plurality of electrodes extending along a first direction and a plurality of cross electrodes extending along a second direction crossing the first direction; 
 a first digitizer disposed under the display layer and overlapping the first non-folding area; and 
 a second digitizer disposed under the display layer and overlapping the second non-folding area, 
 a main driver configured to calculate coordinates of a pen based on a first signal obtained from the sensor layer, a second signal obtained from the first digitizer, and a third signal obtained from the second digitizer, 
 wherein the first signal is obtained in a compensation area of the sensor layer that overlaps a gap between the first digitizer and the second digitizer, 
 wherein the folding area is folded based on a folding axis extending along the first direction, 
 wherein a first width of a first electrode overlapping the folding area among the plurality of electrodes is smaller than a second width of a second electrode spaced apart from the folding area among the plurality of electrodes, and 
 wherein the first width is a maximum width parallel to the second direction of the first electrode, and the second width is a maximum width parallel to the second direction of the second electrode. 
 
     
     
       13. The electronic device of  claim 12 ,
 wherein the first signal is a signal detected by an input by an object of less than a reference diameter. 
 
     
     
       14. The electronic device of  claim 12 , wherein the sensor layer comprises:
 a first detection unit overlapping the folding area, a second detection unit overlapping the first non-folding area, and a third detection unit overlapping the second non-folding area, and 
 wherein an area of the first detection unit is smaller than each of areas of the second detection unit and the third detection unit. 
 
     
     
       15. The electronic device of  claim 14 , wherein each of the first detection unit, the second detection unit, and the third detection unit is defined as an area where any one of the plurality of electrodes and any one of the plurality of cross electrodes cross each other. 
     
     
       16. The electronic device of  claim 12 , wherein a first detection area configured to detect an input of a pen is defined in the first digitizer,
 wherein a second detection area configured to detect an input of the pen is defined in the second digitizer, 
 wherein the first electrode non-overlaps the first detection area and the second detection area, and 
 wherein the second electrode overlaps the first detection area or the second detection area. 
 
     
     
       17. The electronic device of  claim 12 , wherein the first digitizer and the second digitizer are spaced apart from each other, and
 wherein a gap between the first digitizer and the second digitizer overlaps the folding area of the display layer. 
 
     
     
       18. An electronic device driving method comprising:
 receiving a first signal from a sensor layer in which a first non-folding area, a second non-folding area, and a folding area between the first and second non-folding areas are defined; 
 receiving a second signal and a third signal from a first digitizer overlapping the first non-folding area and a second digitizer overlapping the second non-folding area, respectively, the first and second digitizers being disposed under the sensor layer; and 
 calculating coordinates for a pen input using the first signal, the second signal, and the third signal, 
 wherein the first signal is obtained in a compensation area of the sensor layer that overlaps a gap between the first digitizer and the second digitizer. 
 
     
     
       19. The method of  claim 18 , wherein the first signal is a signal detected by an input by an object of less than a reference diameter. 
     
     
       20. The method of  claim 19 , wherein the calculating of the coordinates for the pen input comprises:
 calculating coordinates of the pen inputted to the first non-folding area based on the second signal provided from a first detection area of the first digitizer; 
 calculating coordinates of the pen inputted to the second non-folding area based on the third signal provided from a second detection area of the second digitizer; and 
 calculating coordinates of the pen inputted to the folding area based on the first signal provided from the compensation area of the sensor layer non-overlapping the first detection area and the second detection area.